His bilirubin levels are okay and he can be taken home. You need to monitor if he is 'getting more yellow'. You press over your newborn over bony prominence like over forehead, chest, legs,palms and soles and see if they are yellowish. Do not get stressed if you cannot examine yourself. Examination can only be done in daylight. take care of your baby as he is premature and needs precautions for proper growth and development. If you feel any doubts, consult.